->''"We have searched the skys for signals... Our spacecraft have explored dozens of exquisite worlds in the family of our sun... But as far as we've looked, there's only one place in the entire universe where the miracle of life exists... Our own planet Earth. Life is so rare and precious. We must safeguard... protect... and cherish it."''

----!!This special has the following examples of:* AwardBaitSong: Barbra Streisand's "One Day". The opening has a bit of her 1985 song "Somewhere".* BadFuture: [[Film/BackToTheFuture Doc Brown]] has witnessed the year 2057, and it's not pretty.* {{Blipvert}}: Especially at the beginning, when Mother Earth is rushed into the hospital.* BreakingTheFourthWall: Bugs Bunny, naturally, and Martin Short as Nathan Firm. The latter does have some merit, however, as he was being filmed by Downtown Julie Brown's news crew. [[spoiler:Bette Midler and Robin Williams break character at the end, and Midler even says, "It's going to take a whole lot more, though, than just one television show..."]]* {{Expy}}: Harold Ramis as Dr. Elon Spenger, [[UncannyFamilyResemblance brother]] of [[Film/{{Ghostbusters}} Dr. Egon Spangler]] and president of Wastebusters.* FramingDevice* GreekChorus: Paula and Victor.* GreenAesop: What's an Earth Day special without one?* HilariousOuttakes: Some of the parting advice from the AllStarCast before the credits end up as nothing more than flubs.* LargeHam: Robin Williams.* LaughTrack: The ''SaturdayNightLive'' and ''Dating Game'' segments, and a little bit in the ''Cheers'' segment.* {{Leitmotif}}: Some characters from other sources have one taken straight from their source material.* LogoJoke: The Blue Office Pictures logo at the beginning turns into "Green Office Pictures". The Vault Productions logo also turns green.* MadeForTVMovie* MassiveMultiplayerCrossover: A good number of actors reprised their roles of characters they were known for portraying at the time (Neil Patrick Harris as DoogieHowserMD, for example).* MilestoneCelebration: As Porky Pig points out in the beginning, the special was created to commemorate Earth Day's 20th Anniversary.* MoodWhiplash: All over the place.* MuppetCameo: This just so happened to be one of Creator/JimHenson's last projects - ''The Earth Day Special'' aired mere weeks before Jim passed away.* NightmareSequence: Vic dreams about his buddies making fun of him and taking the environment for granted, then witnessing Mother Earth flatlining.* OpeningNarration: Quoted above.* PrecisionFStrike: The word "Hell" is used sparingly throughout this special.* PhysicalGod: Mother Earth.* {{P|ublicServiceAnnouncement}}SA: They don't kick in until late in the special.* PunctuatedForEmphasis: The end of Vic's nightmare. -->'''Doogie Howser:''' "Vic, this is ALL... YOUR... FAULT!"* RandomEventsPlot* RecurringRiff: The melody from "One Day" underscores the action occasionally.* RogerRabbitEffect: How the Looney Tunes characters were able to appear in the special.* SayMyName: Every Man when Mother Earth faints.* TemptingFate: In Every Man's speech, he says "[Mother Earth]'s the type of mom who could never say no." Cue Mother Earth putting him in his place.* VisualPun: As Bugs leaves, he mutters, "This was a great place to live, 'til man set foot on it." Cue closeup of one of Every Man's feet stepping into frame.* WrongTurnAtAlbuquerque: Bugs doesn't say the actual phrase, but he was trying to get to the Kookamunga Carrot Festival.----